Engine monitoring unit



FIG. 1 is a front elevation view of an engine monitoring unit;

FIG. 2 is a perspective view of the engine monitoring unit of FIG. 1;

FIG. 3 is a rear elevation view of the engine monitoring unit of FIG. 1;

FIG. 4 is a bottom plan view of the engine monitoring unit of FIG. 1;

FIG. 5 is a top plan view of the engine monitoring unit of FIG. 1;

FIG. 6 is a right side elevation view of the engine monitoring unit of FIG. 1; and,

FIG. 7 is a left side elevation view of the engine monitoring unit of FIG. 1. 

CLAIM The ornamental design for an engine monitoring unit, as shown and described. 